Roaster.



ROASTER;

APPLICATION FILED MAR. 31, 1906. RENEWED JUNE 11,1907.

k WITNESSES:

AWSRNEYS Vv'AJTER G. SWART, OF DENVER, OOLO/LADO.

ROASTER,

x1101" Letters .PZWSIM.

Patented 18, 199%.

230. 879,842. Speeificai" germ No. 241211.

Orig-inn application film February '25 N05.

- Renewed June 11, 1907'.

To allw/wm ma/g; COIECaPTIJ. bwiuro 1' Be 1t known that 1. VALTER Emma's", a Lauliznd 1 "Br; 1 mga,

. Improvements in 021M113, (:I l $031 llowinrq 1s a specification, i: ken .7 i

' n \uth. the amompsmying air-z; r 10121 a put of the name.

This invention yelai'as "b0 romftem adapr x1 univrsai application. but particularly wiayLc-d. for wasting zinc ore, galezm, 01 mile: difficult/1y roasiing sulfid arcs in a :m'1ti1:u =us manna:

in my (sons- Auction of masters i wan tinuousllr lwmst, one grade of ore or if desired, two grades of or at the same time and at aha 55-21116 time 1' 6 them. separz-wd as Hwy pass thmugh the 1: TM"

for are ireaui process In Hm amrompa 'ra ted 0111 00 7 v in perapectlve .31, the .same wfvrenc's in tin; 5mm: m

ii; i w ilhfhmive writ-m!inwnt '2 i'iawing, H10 mm:

having svi lmflng gm Z111}: mvuzmun,

.IOUX

. I .ngrez sojmv extant 11d also the wiimimu are provided with collars 13 vino nu'izu' opaemngs of any Hil'ZP (lusii'm center if \t nvsc shulvos. [As-z) winking ipes 5!), 31, 32 "re an; able- .iutem'als :iroumi the pm. Qther shelves so as to 00ml: 0'

iiunugh the bppzredtus in a, an

suhurous gas. usuaily {1&086"

v desire to be limited, what is claimed as new sary order to roperly desulfurizesueh ores can be ,rea ily supplied b feeding through the other 'conv'eyer 7 an over the other, series of hearths some other pyritical or sulfur-bearing heating material, such as iron p rites,-chalcopyrite, pyrrhotite or similar su fid material, or if desired, sulfur itself may be'employed in some cases. After the roaster has been brought up to heat by the furnace indicated or by other heating means the desulfurization of the oretakes place in a Well-known manner, the pro er amount of additional heat being su plie to the artly desulfurized ore" by the ceding of suilicient pyritical or other sulfur bearing heating ma terial so. that not only is the ore properly de sulfurized Without the use of coal or similar heating material, but also the sulfurous gases are richer and better adapted for subsmhuent treatment in sulfuric acid apparatus an for utilization in other ways I Having thus described my invention in connection with an illustrative embodiment thereof, to thev details of which I do not and whatis desired to be secured by Letters Patent is set forth in the appended claims.

1. A roaster having a hearth with a pll1 rality of substantially radial slots extending inward from its periphery.

2. In roasters, a series of vertically arrayed hearths each rovided with a plurality alinement. I v,

3. In roasters, a series of vertically arof substantially ra ial slots out of vertical rayed hear-the, each rovided with a plurality or substantially re ial slots out of vei't ical 6. In a roaster, a lurality of fixedslotted hearths, each hearti having a plurality of radial slots arranged staggered to the next succeeding hearth, rotating rabbles ada ted to coact with each division of the ed hearths so tha't the material fed u on different portions of the hearth will be rcpt separated, as it movesrthrough out the roaster.

7. In a roaster, a lurality of fixed slottedhearths, each heart ix having a plurality of slots, rotating-rabbles mounted uponacen-i tral shaft, circulating pipes, passages between the vertical shaft and the hearth, substantially as described"; 1, 1

8 In aroaster, a lurality of fixed slotted hearths, each heart having a plurality of slots, rotatingrabbles mounted-upon a centralvei'tical shaft, circulating-fipesfpasfl sages between the vertical straits tweeneach alternate heart-h; i iv i TE. ?G-r$WA Witnesses: V 7' i G. L. Scotsman;

" JonnMoMnnamm; 

